IP Library
Patent Attorney

Vivien Chen Nielsen

Reg. No. 62514
Active
Not accepting new clients
Firm
Astellas US LLC
Location
Northbrook, IL 60026
Phone
224-205-5225
Registration Type
ATTORNEY
Roster
USPTO OED FY25
Search their patent cases → All cases at Astellas US LLC
Firm and contact info reflects the FY25 roster (last updated September 25). Attorneys may have changed firms since then — patent filings show their current firm of record.